Daiky Extender Road Mountain Bike Bicycle Stem Riser Adapter 1 1/8" φ22.2mm 25.4mm150mm

Does the job as intended. I ordered the 22.2 mm for a bmx threaded to threadless conversion and the results were satisfactory. One thing I did was to cut some of the top of the 1 1/8 side of the tube to avoid having to use a bunch of spacers. I went from 40mm to 10mm.The problem was that the sliding part wasn't the correct diameter. They sent a 25.4 instead of a 22.2.Since this is not my first rodeo, I just machined it to fit my application.